SBVS058D June   2005  – April 2026 REF3212 , REF3220 , REF3225 , REF3230 , REF3233 , REF3240

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Electrical Characteristics
    4. 5.4 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
      1. 6.1.1 Supply Voltage
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Thermal Hysteresis
      2. 6.3.2 Temperature Drift
      3. 6.3.3 Noise Performance
      4. 6.3.4 Load Regulation
    4. 6.4 Device Functional Modes
      1. 6.4.1 Shutdown
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 Long-Term Stability
    2. 7.2 Typical Application
      1. 7.2.1 Detailed Design Procedure
        1. 7.2.1.1 Negative Reference Voltage
        2. 7.2.1.2 Data Acquisition
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.3.2 Temperature Drift

The REF32xx is designed to exhibit minimal drift error, which is defined as the change in output voltage over varying temperature. The drift is calculated using the box method, as described by Equation 2:

Equation 2. D r i f t = V O U T M A X - V O U T M I N V O U T × T e m p e r a t u r e   R a n g e × 10 6 p p m

The REF32xx features a typical drift coefficient of 4ppm/°C from 0°C to +125°C – the primary temperature range for many applications. For the extended industrial temperature range of –40°C to +125°C, the REF32xx family drift increases to a typical value of 10.5ppm/°C.